Market Notices

118322POWER SYSTEM EVENTS19/09/2024 04:16:27 PM

Update - Non-credible contingency event - TAS region - 19/09/2024

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - TAS region - 19/09/2024

Refer AEMO Electricity Market Notice 118321

At 1446 hrs the Gordon - Chapel St No 1 and No 2 220 kV lines were returned to service.

This non-credible contingency event was caused by lightning. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.


Manager NEM Real Time Operations
     
118321POWER SYSTEM EVENTS19/09/2024 03:28:41 PM

Update - Non-credible contingency event - TAS region - 19/09/2024

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - TAS region - 19/09/2024

At 1340 hrs the Gordon - Chapel St No1 and No 2 220 kV lines tripped.

AEMO did not instruct load shedding.

AEMO has advised of approximately 112 MW disconnection of bulk electrical load,
disconnection of generation at Studland Bay Wind generator (71 MW) and 23 MW generation reduction at Gordon Power station.

The cause of this non credible contingency event is not known at this stage.

Manager NEM Real Time Operations
     
118320POWER SYSTEM EVENTS19/09/2024 01:54:59 PM

Non-credible contingency event - TAS region - 19/09/2024

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - TAS region - 19/09/2024

At 1340 hrs the Gordon - Chapel St No1 and No 2 220 kV lines tripped.

AEMO did not instruct load shedding.

AEMO has not been advised of any disconnection of bulk electrical load.

The cause of this non credible contingency event is not known at this stage.

Manager NEM Real Time Operations
     
118319GENERAL NOTICE19/09/2024 01:45:31 PM

Planned outage of Tailem Bend - South East 275 kV transmission line in the South Australia region beginning on 20/09/2024

AEMO ELECTRICITY MARKET NOTICE

The Tailem Bend - South East No 1 275 kV line in the South Australian (SA) region is planned to be out of service from 2100 hrs on 20/09/2024 to 0530 hrs on 21/09/2024.

A credible contingency event during this planned outage could cause synchronous separation of the SA region from the rest of the NEM.

During this planned outage:
- Power transfer will be restricted across the VIC - SA interconnector (Heywood interconnector); and
- Post contingent FCAS will be sourced within SA following Separation event.

Refer AEMO Network Outage Schedule (NOS) for further details.

AEMO Operations
     
118299RESERVE NOTICE16/09/2024 07:16:21 PM

Cancellation of Actual (LOR1) condition in the NSW region - 16/09/2024

AEMO ELECTRICITY MARKET NOTICE

Cancellation of Actual (LOR1) condition in the NSW region - 16/09/2024

The Actual LOR1 Condition in the NSW Region advised in AEMO Electricity Market Notice No.118298 is cancelled at 1915 hrs 16/09/2024.

Manager NEM Real Time Operations
     
118298RESERVE NOTICE16/09/2024 06:16:31 PM

Actual Lack Of Reserve Level 1 (LOR1) in the NSW region - 16/09/2024

AEMO ELECTRICITY MARKET NOTICE

Actual Lack Of Reserve Level 1 (LOR1) in the NSW region - 16/09/2024

An Actual LOR1 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the NSW region from 1800 hrs.
The Actual LOR1 condition is forecast to exist until 1900 hrs

The capacity reserve requirement is 1400 MW
The minimum capacity reserve available is 1274 MW

Manager NEM Real Time Operations
     
118226GENERAL NOTICE10/09/2024 05:55:51 PM

Network Augmentation Commissioned - NSW Region - 10/09/2024

AEMO ELECTRICITY MARKET NOTICE

Network Augmentation Commissioned - NSW Region - 10/09/2024

At 1750 hrs, the following equipment at Buronga 330 kV substation has been commissioned:

1) Buronga 330 kV A bus.
2) Buronga 330 kV B bus.
3) Buronga No 1 330 kV capacitor.
4) Buronga No 2 330 kV capacitor.
5) Buronga No 7 330/220 kV transformer.

Manager NEM Real Time Operations
     
118171POWER SYSTEM EVENTS06/09/2024 08:18:58 PM

Update - Non-credible contingency event - VIC region - 06/09/2024

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - VIC region - 06/09/2024

Refer AEMO Electricity Market Notice 118166

At 2005 hrs the Loy Yang PS No. 4 500 kV bus was returned to service.

The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.

AEMO will not reclassify this event as a credible contingency event.

Manager NEM Real Time Operations
     
118166POWER SYSTEM EVENTS06/09/2024 12:38:00 PM

Non-credible contingency event - VIC region - 06/09/2024

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - VIC region - 06/09/2024

At 1222 hrs the Loy Yang PS No. 4 500 kV bus tripped.

AEMO did not instruct load shedding.

AEMO has not been advised of any disconnection of bulk electrical load.

The cause of this non credible contingency event is not known at this stage.


Manager NEM Real Time Operations
     
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